package com.lightjet.macross.base.awf.controller;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import lombok.extern.java.Log;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;

/**
 * @author : lijia
 * @version : 1.0 2019-04-10 23:12
 * description :
 */

@RestController
@Log
public class ModelSaveRestResource {
    @Autowired
    private RepositoryService repositoryService;

    @Autowired
    private ObjectMapper objectMapper;

    @RequestMapping(value="/model/{modelId}/save", method = RequestMethod.PUT)
    @ResponseStatus(value = HttpStatus.OK)
    public void saveModel(@PathVariable String modelId, String name, String description, String json_xml, String svg_xml) {
        try {

            Model model = repositoryService.getModel(modelId);

            ObjectNode modelJson = (ObjectNode) objectMapper.readTree(model.getMetaInfo());

            modelJson.put("name", name);
            modelJson.put("description", description);
            model.setMetaInfo(modelJson.toString());
            model.setName(name);

            repositoryService.saveModel(model);

            repositoryService.addModelEditorSource(model.getId(), json_xml.getBytes("utf-8"));

            InputStream svgStream = new ByteArrayInputStream(svg_xml.getBytes("utf-8"));
            TranscoderInput input = new TranscoderInput(svgStream);

            PNGTranscoder transcoder = new PNGTranscoder();
            // Setup output
            ByteArrayOutputStream outStream = new ByteArrayOutputStream();
            TranscoderOutput output = new TranscoderOutput(outStream);

            // Do the transformation
            transcoder.transcode(input, output);
            final byte[] result = outStream.toByteArray();
            repositoryService.addModelEditorSourceExtra(model.getId(), result);
            outStream.close();

        } catch (Exception e) {
            log.warning("Error saving model:"+e.getMessage());
            throw new ActivitiException("Error saving model", e);
        }
    }

}
